Thanks Edward. I think we need to persuade D1 to show his face on here. See how long a thread of useful information and general banter we can stretch out of him.
This is definitely the high-tech forum compared to some, and based in the old country as well. I've already asked Fred for a quote for a set of 1610 ballscrews with combined delivery, but his online prices look very acceptable.
I'm not sure I should post any pictures of my current efforts on here among such hallowed experts. Then again a thread on 'How NOT To Build a CNC Router' might help a few other beginners.

Kit